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Shop 206 sensor from 18 trusted brands including BOSCH, DT Spare Parts, COJALI. Compare prices, check vehicle compatibility, and get free delivery on orders over £50.
OEM & aftermarket sensor from top brands — compare prices, check fitment, order with free delivery
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Commonly searched OE numbers fitting Sensor from the TecDoc catalogue.
Automotive sensors convert physical quantities — temperature, pressure, speed, position, gas concentration — into electrical signals that the engine control unit and body control module use to manage fuel injection, ignition timing, emissions, safety systems, and driver aids. When a sensor fails or drifts out of calibration, the ECU falls back to default values, reducing efficiency and triggering warning lights. Keeping sensors in good condition is central to fuel economy, emissions compliance, and passing the MOT emissions test. CarParts247 stocks a comprehensive range of OEM and aftermarket sensors from Bosch, Hella, NTK, and Continental for virtually every make and model.
An OBD-II scanner reads live sensor data and fault codes. A sensor reading outside its expected range — or one that is implausibly static while others respond — points to the faulty unit. Compare live readings against specification: coolant temperature should climb from ambient to around 90 °C during a normal warm-up cycle; if it reads -40 °C permanently the sensor has failed open-circuit.
Bosch, NTK, and Continental manufacture sensors to OE specification and supply direct to the vehicle makers. Budget sensors may have wider calibration tolerances that cause the ECU to trim fuel or ignition timing unnecessarily. For emissions-sensitive sensors such as lambda probes and MAF sensors, OEM or premium aftermarket is strongly recommended.
You can clear the code, but if the underlying fault is still present it will return within one or two drive cycles. Only replace the sensor once you have confirmed it is faulty using live data, not just a fault code.
Yes — a stored or pending emissions-related fault code causes the emissions test to fail, even if the car appears to run normally. Fix the sensor before presenting the car for MOT.
Inspect the connector for corrosion, bent pins, or water ingress. Measure supply voltage and continuity of the sensor earth. If supply and earth are correct and the sensor output is still wrong, the sensor itself is faulty.
Most plug-in replacement sensors are self-calibrating within a drive cycle. Exceptions include steering angle sensors and throttle position sensors on some platforms, which require a reset procedure via a diagnostic tool.
Common original equipment numbers linked to replacement-part pages.
